package com.ny.kind;

public class WeChatPay implements  Pay {
    double m = 500;

    public void pay(double money) {
        if (m < money) {
            System.out.println("你的余额不足");
        } else {
            System.out.println("你消费了" + money);
            m = m - money;
            System.out.println("你的余额为" + m);
        }
    }
}
